diff --git a/htdocs/core/modules/facture/doc/doc_generic_invoice_odt.modules.php b/htdocs/core/modules/facture/doc/doc_generic_invoice_odt.modules.php
index 8aa417c83c022b679d54af1ae0f7d169ba98d411..36460b19277c430465af0e109c4773004cad22d9 100644
--- a/htdocs/core/modules/facture/doc/doc_generic_invoice_odt.modules.php
+++ b/htdocs/core/modules/facture/doc/doc_generic_invoice_odt.modules.php
@@ -336,12 +336,24 @@ class doc_generic_invoice_odt extends ModelePDFFactures
 			{
 				//print "srctemplatepath=".$srctemplatepath;	// Src filename
 				$newfile=basename($srctemplatepath);
-				$newfiletmp=preg_replace('/\.odt/i','',$newfile);
+				$newfiletmp=preg_replace('/\.od(t|s)/i','',$newfile);
 				$newfiletmp=preg_replace('/template_/i','',$newfiletmp);
 				$newfiletmp=preg_replace('/modele_/i','',$newfiletmp);
+				
 				$newfiletmp=$objectref.'_'.$newfiletmp;
+				
+				// Get extension (ods or odt)
+				$newfileformat=substr($newfile, strrpos($newfile, '.')+1);
+				if ( ! empty($conf->global->MAIN_DOC_USE_TIMING))
+				{
+					$filename=$newfiletmp.'.'.dol_print_date(dol_now(),'%Y%m%d%H%M%S').'.'.$newfileformat;
+				}
+				else
+				{
+					$filename=$newfiletmp.'.'.$newfileformat;
+				}
+				$file=$dir.'/'.$filename;
 				//$file=$dir.'/'.$newfiletmp.'.'.dol_print_date(dol_now(),'%Y%m%d%H%M%S').'.odt';
-				$file=$dir.'/'.$newfiletmp.'.odt';
 				//print "newdir=".$dir;
 				//print "newfile=".$newfile;
 				//print "file=".$file;